对采用磁流体的液压伺服阀力矩马达三维有限元分析

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1、机床与液压Jun．2013HydromechatronicsEngineeringV0l_41No．12DOI：10．3969／j．issn．1001-3881．2013．12．003AnalysisofHydraulicServoValveTorqueMotorwithMagneticFluidUsing3-——DimensionalFiniteElementMethodZHANGZhen，ZENGWen，HANHasiaoqier，LISongjingHarbinInstituteofTechnology，SchoolofMechanicalandElectricalEngin

2、eering，Harbin150001，ChinaAbstract：Astheelectric-mechanismconvefler。torquemotor；sthekeycomponentoftheelectrohydraulicservovalve。ltscharacteristicsjnfluencetheperformanceofservovalvesignificantly．Sincemagneticfluidshavelargermagneticpermeabilityandbiggermagnetizationintensityunderanexternalmagne

3、ticfield，themagneticcircuiteficiencyofthetorqMemotorandthedynamicperformanceoftheservo-valvecanbeimprovedbyapplyingamagneticfluid．Thispaperpro-posedathree-dimensiona1．finite-elementanalysismodeIoftorquemotorwithmagneticfluid．ThemagneticfielddistributionandthetorqMecharacteristicsofthetorquemot

4、orarestudiedwithorwithoutmagneticfluidsbyusingthree-dimensionalfiniteelementandanalyticalmethods．TheconclusionlsdrawnthatthetorqMecharacteristicsofthetorqMemotorwithmagneticfluidcouldimprovemarkedlyascomparedwiththatwithoutmagneticfluid．Keywords：torquemotor，servovalve，magneticfluid，three-dimen

5、sionalfiniteelementmethodbeincreasedandthedynamicperformanceoftorque1．Introductionmotorcanbeimprovedsimultaneously．ThetorquemotorofservovalveisthepolarizedelectromagneticServovalveisanindispensableelementtohy·mechanismwiththeinteractionbetweenpermanentdrauliccontrolsystemsanditsperformancehass

6、ig-magnetsandelectromagnets．Onlybyusingthemeth—nificantinfluenceontheperformanceofthesystems．odoffiniteelementanalysis．canpreciseresultsofTorquemotor，whichconvertselectricsignaltome-magneticfielddistributionbeachieved．Thispaperil-chanicalmovement，isakeyelementoftheelectric—lustratedthestructur

7、eandtheworkingprincipleofhydraulicservovalve[1]．Themagneticfluid(MF)servovalvetorquemotortowhichmagneticfluidsareisacolloidalsolutionthatismadefromnanoscaleadded．Theelectromagneticfieldoftorquemotorismagneticparticleswhicharewrappedandd